External Display Issues in Opensuse

What is it with Linux and for that matter Opensuse that it can not detect external display or even projectors? I have been using Opensuse for very long time and always have problems with my computer and external display and projectors. can’t this issue be fixed once and for all?

You are welcome here, but take care that we are also openSUSE users like you and have no superhuman qualities like clairvoyance.

Please post technical details if you want to invoke any help. What did you attach how to what (display type, connectiontype, …), what did you expect to happen, what happened instead? How did you check if the system detected the connection and how did you come to he conclusion that it did detect it wrong or not at all?